The Hollow sisters are incredibly beautiful, glamorous, and frighteningly strange. Dark and inexplicable things are happening around Grey, Vivi and Iris. It all started a few years ago when the girls disappeared from an Edinburgh street and suddenly returned a month later. The sisters can't remember what exactly happened, but it left each of them with the same crescent-shaped mark under their throats. They have changed dramatically since the incident - the once dark-haire...
